Gloria Foco

Revision and extension of the group contribution equation of state to new solvent groups and higher molecular weight alkanes

Abstract The group contribution equation of state GC-EOS model is revised and extended. Pure group and binary interaction parameters are reported for the following new groups: ether CH 2 O, ester CH 2 COO/CH 3 COO, chloro-aromatic ACCl and triglyceride (TG) (CH 2 COO) 2 CHCOO. Interaction parameters between these groups and paraffin, olefin and CO 2 groups were estimated using experimental vapor–liquid equilibrium data on binary mixtures. The original aromatic-paraffinic, CO 2 –paraffinic and CO 2 –aromatic interaction parameters, have been revised in order to improve phase equilibrium predictions in aromatic and high molecular weight organic compounds.